Home / 28,370.25-39,153.68-15,795

Finding the Fourth Proportional to 28,370.25, 39,153.68 and 15,795

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Solution

The fourth proportional to 28,370.25, 39,153.68 and 15,795 is: 21,798.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.25 : 39,153.68 = 15,795 : x
  2. Step 2: Convert to fraction form
    28,370.25/39,153.68 = 15,795/x
  3. Step 3: Cross multiply
    28,370.25x = 39,153.68 × 15,795
  4. Step 4: Simplify right side
    28,370.25x = 618,432,355.86
  5. Step 5: Solve for x
    x = 618,432,355.86/28,370.25
  6. Step 6: Final answer
    x = 21,798.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.